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Finding the Fourth Proportional to 340.27, 510.65 and 157.79

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Solution

The fourth proportional to 340.27, 510.65 and 157.79 is: 236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.27 : 510.65 = 157.79 : x
  2. Step 2: Convert to fraction form
    340.27/510.65 = 157.79/x
  3. Step 3: Cross multiply
    340.27x = 510.65 × 157.79
  4. Step 4: Simplify right side
    340.27x = 80,574.92
  5. Step 5: Solve for x
    x = 80,574.92/340.27
  6. Step 6: Final answer
    x = 236.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.